Dual Power and intelligent bus technology (ZugBUS):

Do you operate with direct current or alternating current? Thanks to Dual Power, this key question is rendered completely insignificant with immediate effect. The TWINDEXX Vario from BRAWA can be utilised on both two-wire and three-wire tracks. In order to operate on alternating current systems, the supplied clip pick-up shoe is simply assembled in a few easy steps and away you go. The ESU LokPilot Decoder automatically recognises the type of current and switches to the correct operating mode within milliseconds. In doing so, the power consumption only takes place via the control car. The digital version EXTRA is also equipped with intelligent bus technology (ZugBUS) that supplies the central cars with current from the control car, meaning that no ad­ditional pick-up shoes are required. Furthermore, additional information is supplied to the digital system via conductive elements to the couplings – as a result, the interior lighting for all coaches can be controlled separately for instance. The green light for more travelling pleasure!

Looks like ESU has produced a decoder especially for Brawa on the other hand I have used conductive couplers for years and used the loco decoder for interior lights.
ESU also introduced a new adapter plate to be able to access 6 Aux functions, although at a cost whereas others have included 6 Aux functions within the decoder (Zimo)

Having to add the slider for 3 rail, it seems it can't identify both systems at the same time (2 rail-3 rail), the question begs how many modeler use both systems at the same time, the only thing I can think of being new is the wheels have to be isolated from each other and the decoder switches the current form the second rail to the third rail and it has to be seen whether or not the 3 rail version will have both wheels with track power or will it stay for 2 rail use.

John

http://www.reynaulds.com/products/Brawa/44502.aspx

Methinks this was posted 12 months ago. Methinks also that this post was three days late

I agree with Arlo. This is not so much an advantage as a cost saver.

My worry is that compromises have to be made in the wheel profile and back-to-back measurements, which might lead to less than perfect running over turnouts.

ESU makes AC locos, DC locos, and AC/DC locos - all sold at nearly €400.
Methinks a simple mechanical two-way switch will not make such an AC/DC loco expensive (compared to the other gimmicks they add: two speakers, a dozen light functions, smoke generator, ...). The average user will push the slider in once for good, so there should be little wear on the mechanical switch for the vast majority of customers.

ESU warn that the AC/DC versions are not fully compatible with M track.
I wonder if the flanges of AC/DC locos are larger than those of pure DC locos. If they are, two-rail users may not like the look; if they are not, three-rail users may not like the "click" they make on switches.